[londons_explore]

Another possibility for the creation of films like this is to make it seem the government is doing something about a problem.

In this case, there was no evidence that 'duck and cover' saved any lives, even though some people who saw that media experienced bombs and explosions for other reasons.

Doing something ineffective is frequently better than doing nothing in the political world. The population won't accept a president saying 'We're really worried about the Soviets bombs, but we've decided the best action is to do nothing'. Saying "we're training everyone what to do if a nuke explodes" is part of a strategy to make the public think you have control of the situation.